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net: phy: implement fallback mechanism for negative phy adresses

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Negative phy-addresses can occour if the caller function was not able to
determine a valid phy address (from device-tree for example). In this
case we catch this here and search for ANY phy device on the given mdio-
bus.

Signed-off-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Tested-by: Lukasz Majewski <lukma@denx.de>
This commit is contained in:
Hannes Schmelzer 2019-03-29 09:54:05 +01:00 • committed by Tom Rini
parent 0e62d5b2ab
commit afbc31948a
1 changed files with 2 additions and 1 deletions
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3
drivers/net/phy/phy.c
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@ -922,13 +922,14 @@ struct phy_device *phy_connect(struct mii_dev *bus, int addr,
#endif #endif
{ {
struct phy_device *phydev = NULL; struct phy_device *phydev = NULL;
uint mask = (addr > 0) ? (1 << addr) : 0xffffffff;
#ifdef CONFIG_PHY_FIXED #ifdef CONFIG_PHY_FIXED
phydev = phy_connect_fixed(bus, dev, interface); phydev = phy_connect_fixed(bus, dev, interface);
#endif #endif
if (!phydev) if (!phydev)
phydev = phy_find_by_mask(bus, 1 << addr, interface); phydev = phy_find_by_mask(bus, mask, interface);
if (phydev) if (phydev)
phy_connect_dev(phydev, dev); phy_connect_dev(phydev, dev);